v8/test/intl/locale/locale-calendars.js

// Copyright 2021 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Test the return items of calendars fit 'type'
let a_to_z = "abcdefghijklmnopqrstuvwxyz";
let regex = /^[a-zA-Z0-9]{3,8}(-[a-zA-Z0-9]{3,8})*$/;
for (var i = 0; i < a_to_z.length; i++) {
  for (var j = 0; j < a_to_z.length; j++) {
    let l = a_to_z[i] + a_to_z[j];
    let locale = new Intl.Locale(l);
    locale.calendars.forEach(function(tokens) {
      assertTrue(regex.test(tokens),
          locale + ".calendars [" + locale.calendars +
          "]  but '" + tokens + "' does not meet 'type: alphanum{3,8}(sep alphanum{3,8})*'");
    });
  }
}